CN217484706U

CN217484706U - Developing box

Info

Publication number: CN217484706U
Application number: CN202122974624.1U
Authority: CN
Inventors: 晏梅; 邹兴
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2021-11-30
Publication date: 2022-09-23
Anticipated expiration: 2031-11-30

Abstract

The utility model relates to a developing box, detachable install to image forming device in, image forming device has sensitization drum, first location plane and impeller, developing box includes: a housing configured to accommodate a developer; a developing roller rotatably supported in the casing and rotatable about a first axis extending in a first direction; the separating component is arranged on the shell, and one end of the separating component is provided with a first plane parallel to the first direction; the separation member may receive a push from the urging member to move in a first direction relative to the casing and bring the first plane into abutment with the first positioning plane to form a first angle, so that the developing cartridge may move from a first position where the developing roller is held in contact with the photosensitive drum to a second position where the developing roller and the photosensitive drum are separated. The utility model discloses developing box simple structure is stable, has improved the unstable problem of drum roller separation among the prior art.

Description

Developing box

Technical Field

The utility model relates to an electronic imaging field especially relates to a developing box.

Background

The related art discloses an image forming apparatus including a developing cartridge and a photosensitive member cartridge, the process cartridge being operated such that a developing roller is in contact with a photosensitive drum and supplies a developer to the photosensitive drum when an image is formed, and the developing roller is separated from the photosensitive drum when the process cartridge is not forming an image, and the developing roller does not supply the developer to the photosensitive drum. The processing box is provided with a forced pushing separating piece in a photosensitive element box, a forced pushing force receiving part is arranged on a developing box, the forced pushing separating piece can receive forced pushing force of electronic imaging equipment and transmit the forced pushing force to the forced pushing force receiving part, so that the developing box is relatively displaced with the photosensitive element box, and a photosensitive drum is separated from a developing roller.

SUMMERY OF THE UTILITY MODEL

The utility model provides a developing box, its purpose compels to push away the technical problem that the easy pine of portion of receiving of the power of pushing away takes off in separation portion and the developing box compels when solving among the prior art drum roller separation.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

a developing cartridge detachably mountable to an image forming apparatus having a photosensitive drum, a first positioning plane, and a urging member, the developing cartridge comprising:

a housing configured to accommodate a developer;

a developing roller rotatably supported in the casing and rotatable about a first axis extending in a first direction;

a separating member provided on the housing, an end of the separating member being provided with a first plane parallel to the first direction;

the separation member may receive an urging force from the urging member to move in a first direction relative to the casing and bring the first plane into abutment with the first positioning plane to form a first angle, so that the developing cartridge may move from a first position where the developing roller is held in contact with the photosensitive drum to a second position where the developing roller and the photosensitive drum are separated.

Further, the separating member may further include a second plane provided in parallel with the first direction, the image forming apparatus may have a second positioning plane provided in parallel with the first direction, and the second plane may abut against the second positioning plane when the separating member is located at the first position.

Further, when the separating member moves from the first position to the second position, the second plane follows the separating member to move away from the second positioning plane.

Further, the first included angle ranges from 40 ° to 60 °.

Further, the separating member includes a connecting shaft extending in a first direction, and a first actuator and a second actuator respectively disposed at both ends of the connecting shaft, and the first plane is disposed on the first actuator.

Further, a resilient member is included, disposed between the second actuator and the housing, configured to extend and retract in a first direction.

Further, the second actuator is provided with a stop part, the housing is provided with a stop block, and when the separating member is located at the second position, the stop part abuts against the stop block.

Furthermore, the surface of the shell is provided with an accommodating groove, the accommodating groove extends in the first direction, the connecting shaft is arranged in the accommodating groove, and two ends of the connecting shaft protrude out of the accommodating groove in the first direction.

After having adopted above-mentioned technical scheme, through the institutional advancement to the separating member, only make the separating member drive the displacement of developing cartridge through the unilateral driving force of acting on the separating member, realize the drum roller separation for the separating member can more stable receipt driving force, and simple structure is stable, has improved the unstable problem of drum roller separation among the prior art.

Drawings

FIG. 1 is a schematic view of a developer cartridge according to an embodiment of the present invention;

FIG. 2 is a schematic view of an angle of a developing cartridge according to an embodiment of the present invention;

FIG. 3 is a schematic view of a developing cartridge according to an embodiment of the present invention;

FIG. 4 is a schematic view of a first side of a developing cartridge according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a second side of a developing cartridge according to an embodiment of the present invention;

FIG. 6 is an exploded view of a developer cartridge separating member according to an embodiment of the present invention;

FIG. 7 is a schematic view of a developer cartridge separating member in a first position according to an embodiment of the present invention;

fig. 8 is a schematic structural view of the developing cartridge separating member in the second position according to the embodiment of the present invention.

Detailed Description

In order to make the technical solution and technical effect of the embodiment of the present invention clearer, the following will clearly and completely describe the technical solution of the developing cartridge of the present invention with reference to the accompanying drawings.

In the following description, with the direction in which the axis of the developing roller extends being a "first direction", the outer circumferential surface of the developing roller includes one end exposed outside the casing and the other end positioned inside the casing, and with the arrangement of the one end exposed outside the casing and the other end positioned inside the casing being reversed to be a "second direction", that is, the second direction can be a direction in which the outer circumferential surface of the developing roller is separated from or approaches the outer circumferential surface of the photosensitive drum, and the first direction and the second direction are perpendicular to each other.

Image forming apparatus with a toner supply device

Fig. 1 is a schematic view of an image forming apparatus, which includes four developing cartridges 100, a drawer portion 200, and a main body portion, as shown in fig. 1. The drawer-shaped portion 200 includes four slots 201, the developing cartridges 100 are detachably mounted in the slots 201 of the drawer-shaped portion 200, the developing cartridges 100 can be attached to the main body portion when mounted in the drawer-shaped portion 200, the four developing cartridges 100 can accommodate four different colors of developers, wherein the number of the developing cartridges 100 mounted in the drawer-shaped portion 200 can be adjusted according to actual needs. Among them, the drawer portion 200 is provided with photosensitive drums 202 disposed in one-to-one correspondence with the developing cartridges 100, and the outer peripheral surfaces of the photosensitive drums 202 are used to form electrostatic latent images.

Developing cartridge 100

Fig. 2 and 3 are schematic perspective views of the developing cartridge 100. As shown in fig. 1, the developing cartridge 100 includes a casing 11, the casing 1 configured to contain a developer, the casing 1 having a first side 11 and a second side 12 disposed apart from each other in a first direction.

The developing cartridge 100 further includes a developing roller 2 and a powder feeding roller (not shown), and the developing roller 2 is rotatably supported between the first side surface 11 and the second side surface 12 of the casing 1, and is rotatable about a first rotation axis extending in the first direction. The developing roller 2 comprises a developing roller 2 shaft and a developing roller 2 body, the developing roller 2 body is sleeved and fixed on the peripheral surface of the developing roller 2 shaft and rotates along with the developing roller 2 shaft, and one end of the peripheral surface of the developing roller 2 body is exposed out of the shell 1. The powder feeding roller is rotatably supported between the first side surface 11 and the second side surface 12 of the casing 1, and is rotatable about a second rotation axis extending in the first direction, and developer is supplied to the outer peripheral surface of the developing roller 2 by the powder feeding roller when the developing roller 2 and the powder feeding roller rotate.

The first side 11 of the casing 1 is provided with a conductive member 6 for electrical connection to the developing roller 2, the conductive member 6 being for contact with an electrical output member (not shown in the drawings) in the image forming apparatus to electrically charge the developing roller 2. The second side 12 of the housing 1 is provided with a coupling member 4, a developing roller gear and a powder feeding roller gear, the coupling member 4 being for engagement with a driving part (not shown in the drawings) in the image forming apparatus to receive a driving force and rotating about a rotating shaft in a first direction; the developing roller gear is meshed with the coupling member 4, rotates along with the coupling member 4 and simultaneously drives the developing roller 2 to rotate, and the powder feeding roller gear is meshed with the coupling member 4 and simultaneously drives the powder feeding roller to rotate along with the coupling member 4.

In order to prevent the photosensitive drum 202 from being contaminated by contact with the developing roller 2 when the developing cartridge 100 is in the non-printing state, it is therefore necessary to provide a drum roller separating structure. In the present embodiment, the developing cartridge 100 further includes the separation member 5, and the separation member 5 is movable between the first position and the second position to bring the peripheral surface of the developing roller 2 into contact with or separate from the peripheral surface of the photosensitive drum 202. Specifically, when the developing cartridge 100 is mounted in the drawer 200, the separating member 5 is located at the first position where the peripheral surface of the developing roller 2 is in contact with the peripheral surface of the photosensitive drum 202, and the developing roller 2 can transfer the developer to the photosensitive drum 202 in accordance with the electrostatic latent image on the peripheral surface of the photosensitive drum 202; when the separation member 5 moves from the first position to the second position, the developing roller 2 is separated from the photosensitive drum 202 in the second direction.

The separating member 5 includes a connecting shaft 51, a first actuator 52 and a second actuator 53, the connecting shaft 51 extends along a first direction, one surface of the housing 1 is provided with a receiving groove 14 extending along the first direction, a first through hole 15 and a second through hole 16, the first through hole 15 and the second through hole 16 are communicated with the receiving groove 14, the first through hole 15 and the second through hole 16 are separately arranged at two ends of the receiving groove 14 along the first direction, the connecting shaft 51 is arranged in the receiving groove 14, two ends of the connecting shaft 51 respectively pass through the first through hole 15 and the second through hole 16 and are exposed out of the first through hole 15 and the second through hole 16, the connecting shaft 51 can move relative to the first through hole 15 and the second through hole 16 along the first direction, wherein the first actuator 52 and the second actuator 53 are respectively fixed at two ends of the connecting shaft 51, the first actuator 52 is arranged near the first side surface 11, the second actuator 53 is arranged near the second side surface 12, when the separating member 5 moves from the first position to the second position, the separating member 5 moves closer to the first side 11 in the first direction.

The first actuating member 52 includes a first plane 521, the first plane 521 is disposed parallel to the axis of the connecting shaft 51, the drawer-shaped portion 200 has a first positioning plane 204, the first plane 521 forms a first angle with the first positioning plane 204, and when the separating member 5 is located at the first position, one end of the first plane 521 abuts against the first positioning plane 204; when the separating member 5 moves from the first position to the second position, the separating member 5 moves in the first direction along the first positioning plane 204 while bringing the developing cartridge 100 to move in the second direction. The second actuator 53 has a second plane 531, the second plane 531 is disposed in parallel with the axis of the connecting shaft 51, the drawer-shaped portion 200 has a second positioning plane 205, the second positioning plane 205 is disposed in parallel with the second plane 531, wherein, when the separating member 5 is located at the first position, the second plane 531 and the second positioning plane 205 abut against each other; when the separating member 5 moves from the first position to the second position, the separating member 5 moves in the first direction along the second positioning plane 205 while bringing the developing cartridge 100 to move in the second direction, and the second plane 531 is away from the second positioning plane 205 in the second direction. In order to facilitate the movement and the return of the separation member 5 and the developing cartridge 100 while saving space, the first angle has a size in a range of 40 degrees to 60 degrees, preferably 45 degrees.

Further, the second actuator 53 includes a stopper 532, the second side surface 12 has a stopper (not numbered), when the separating member 5 is located at the first position, the stopper 532 has a first distance from the stopper, when the separating member 5 moves from the first position to the second position, the stopper 532 gradually approaches the stopper, when the separating member 5 moves to the second position, the stopper stops the displacement of the stopper 532 to limit the displacement of the separating member 5, prevent the separating member from over-operating, and ensure the stability of the drum roller separation.

For the convenience of resetting, the developing cartridge 100 further includes a return spring 54, the return spring 54 is disposed between the second actuator 53 and the second side 12, the return spring 54 is a compression spring, when the separating member 5 moves from the first position to the second position, the second actuator 53 compresses and deforms the return spring 54, and when the separating member 5 returns from the second position to the first position, the return spring 54 generates a pressing force of the compression deformation, so that the second actuator 53 drives the separating member 5 to move close to the second side 12 in the first direction, and the separating member 5 returns from the second position to the first position.

The drum roller separation and reset process is described in detail below with reference to the drawings:

when the developing cartridge 100 is installed in the image forming apparatus, the developing cartridge 100 is installed in the slot 201 of the drawer-shaped portion 200 in the third direction, and after the door cover of the image forming apparatus is closed, the separating member 5 is located at the first position, one end of the first plane 521 abuts against the first positioning plane 204, the second plane 531 abuts against the second positioning plane 205, and at this time, the developing roller 2 of the developing cartridge 100 contacts with the photosensitive drum 202 of the drawer-shaped portion 200, and the developing cartridge 100 can normally print; when the developing cartridge 100 is required to be in the non-printing state, in order to prevent the photosensitive drum 202 from contacting the developing roller 2 and being contaminated, the pushing member 206 disposed in the drawer-shaped portion 200 moves in the first direction and pushes the second actuator 53, so as to force the separating member 5 to move integrally in the first direction, the first actuator 52 moves along the first positioning plane 204 due to the guidance of the first positioning plane 204, and simultaneously drives the separating member 5 and the developing cartridge 100 to move integrally, so as to cause the developing roller 2 to gradually move away from the photosensitive drum 202 in the second direction, the developing roller 2 of the developing cartridge 100 is separated from the photosensitive drum 202 of the drawer-shaped portion 200, the second plane 531 is away from the second positioning plane 205 in the second direction, when the separating member 5 moves to the second position, the stopper stops to keep the separating member 5 in the second position, the developing roller 2 of the developing cartridge 100 is separated from the photosensitive drum 202 of the drawer-shaped portion 200 and keeps the separated state, thereby achieving the drum roller separating action. When the developing cartridge 100 needs to be reset to work normally, the pushing member 206 of the drawer-shaped portion 200 is withdrawn, the second actuating member 53 is moved along the first direction by the urging force generated by the return spring, and returns to the first position, the first actuating member 52 returns to the first position along the first positioning plane 204, so as to drive the developing cartridge 100 to return to the first position, the developing roller 2 of the developing cartridge 100 is in contact with the photosensitive drum 202 of the drawer-shaped portion 200, and the developing cartridge 100 can print normally.

The above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.

Claims

1. A developing cartridge detachably mountable to an image forming apparatus having a photosensitive drum, a first positioning plane, and a pushing member, comprising:

a housing configured to accommodate a developer;

a developing roller rotatably supported in the casing and rotatable about a first axis extending in a first direction; a separating member provided on the housing, an end of the separating member being provided with a first plane parallel to the first direction;

the separation component can receive the pushing force from the pushing component to move along a first direction relative to the shell and enable the first plane to abut against the first positioning plane to form a first included angle, so that the developing box can move from a first position where the developing roller keeps contact with the photosensitive drum to a second position where the developing roller is separated from the photosensitive drum.

2. A developing cartridge according to claim 1, wherein said separating member further includes a second flat surface disposed in parallel with said first direction, said image forming apparatus has a second positioning flat surface disposed in parallel with said first direction, and said second flat surface abuts with said second positioning flat surface when said separating member is located at the first position.

3. A developing cartridge according to claim 2, wherein said second plane follows said separating member to move away from said second positioning plane when said separating member moves from the first position to the second position.

4. The developing cartridge according to claim 1, wherein the first angle is in a range of 40 ° to 60 °.

5. A developing cartridge according to claim 1, wherein said separating member includes a connecting shaft extending in the first direction, and a first actuator and a second actuator provided at both ends of said connecting shaft, respectively, said first plane being provided on said first actuator.

6. The developer cartridge according to claim 5, further comprising an elastic member disposed between the second actuator and the housing and configured to extend and contract in the first direction.

7. A developing cartridge according to claim 5, wherein said second actuator is provided with a stopper portion, and said casing is provided with a stopper, and when said separating member is located at the second position, said stopper portion abuts against said stopper.

8. The developing cartridge according to claim 5, wherein a receiving groove is formed in a surface of the casing, the receiving groove extends in the first direction, the connecting shaft is disposed in the receiving groove, and both ends of the connecting shaft protrude from the receiving groove in the first direction.